Question

this food web is from an ocean ecosystem in the ross sea, off the coast of antarctica. which of the following organisms eat a primary consumer in this food web? select all that apply. microzooplankton copepod crabeater seal

Explanation:

Step1: Identify primary consumers

Primary consumers eat producers. In the food - web, copepods eat diatoms (producers), so copepods are primary consumers.

Step2: Check who eats primary consumers

From the food - web, we see that crabeater seals eat krill, and krill eat phytoplankton (producers), so krill are primary consumers. Also, some arrows show that crabeater seals eat primary consumers. Microzooplankton eat phytoplankton (producers) and are not predators of primary consumers. Copepods are primary consumers, not predators of primary consumers.

Answer:

crabeater seal